Carbon letters

  • Volume 26
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  • Pages.25-30
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  • 2018
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  • 1976-4251(pISSN)
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  • 2233-4998(eISSN)
Korean Carbon Society (한국탄소학회)
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Dispersion stability of polyelectrolyte-wrapped carbon black particles in a highly fluorinated solvent

  • Yoon, Hyeon Ji (WCSL (world Class Smart Lab) of Green Battery Lab., Department of Polymer Science and Engineering, Inha University) ;
  • Choe, Jun Ho (WCSL (world Class Smart Lab) of Green Battery Lab., Department of Polymer Science and Engineering, Inha University) ;
  • Jin, Hyoung-Joon (WCSL (world Class Smart Lab) of Green Battery Lab., Department of Polymer Science and Engineering, Inha University)
  • Received : 2017.09.12
  • Accepted : 2017.11.20
  • Published : 2018.04.30
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Abstract

The dielectric medium used in electrophoretic displays (EPDs) is required to be an environmentally friendly solvent with high density, low viscosity, and a large electric constant. Hydrofluoroether, a highly fluorinated solvent with eco-friendly characteristics, is regarded as a viable alternative medium for EPDs, owing to the similarity of its physical properties to those of the conventional EPD medium. Surface modification of particles is required, however, in order for it to disperse in the charged solvent. Also, positive/negative charges should be present on the particle surface to enable electrophoretic behavior. In this study, carbon black particles wrapped with positively charged nitrogen (N-CBs) were fabricated by a simple hydrothermal process using a poly(diallyldimethylammonium chloride) solution as a black coloring agent for the EPD. The dispersion behavior of N-CBs was investigated in various solvents.

Keywords

References

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